165 lines
5.1 KiB
HTML
165 lines
5.1 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="Copyright" content="Copyright (c) 2006 by IBM Corporation">
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<title>lstat64()--Get File or Link Information (Large File Enabled)</title>
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<!-- Begin Header Records ========================================== -->
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<!-- Change History: -->
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<!-- YYMMDD USERID Change description -->
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<!-- file cleaned -->
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<!-- Unix2 SCRIPT J converted by B2H R4.1 (346) (CMS) by V2KEA304 -->
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<!-- at RCHVMW2 on 17 Feb 1999 at 11:05:09 -->
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<!-- 011022 JTROUS Changes from API Review 1, V5R2 -->
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<!-- This file has undergone html cleanup May 2002 by JET -->
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<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</head>
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<body>
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<!--End Header Records --><!-- Java sync-link -->
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<script language="Javascript" src="../rzahg/synch.js" type="text/javascript">
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</script>
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<a name="Top_Of_Page"></a>
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<h2>lstat64()--Get File or Link Information (Large File Enabled)</h2>
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<div class="box" style="width: 70%;">
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<br>
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Syntax<br>
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<pre>
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#include <sys/stat.h>
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int lstat64(const char <em>*path</em>, struct stat64 <em>*buf</em>);
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</pre>
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Service Program Name: QP0LLIB1<br>
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<!-- iddvc RMBR -->
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<br>
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Default Public Authority: *USE<br>
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<!-- iddvc RMBR -->
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<br>
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Threadsafe: Conditional; see Usage Notes for <a href="lstat.htm">lstat()</a>.<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The <strong>lstat64()</strong> function gets status information about a
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specified file and places it in the area of memory pointed to by <em>buf</em>.
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If the named file is a symbolic link, <strong>lstat64()</strong> returns
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information about the symbolic link itself.</p>
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<p>The information is returned in the <samp>stat64</samp> structure, referred
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to by <em>buf</em>. For details on the <samp>stat64</samp> structure, see <a
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href="stat64.htm">stat64()--Get File Information (Large File Enabled)</a>.</p>
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<p>If the named file is not a symbolic link, <strong>lstat64()</strong> updates
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the time-related fields before putting information in the <samp>stat64</samp>
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structure.</p>
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<p>For additional information about parameters, authorities required, and error
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conditions, see <a href="lstat.htm">lstat()--Get File or Link
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Information</a>.</p>
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<p>See <a href="lstat64u.htm">QlgLstat64()--Get File or Link Information (Large
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File Enabled)</a> for a description and an example of supplying the <em>
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path</em> in any CCSID.</p>
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<br>
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<h3>Usage Notes</h3>
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<ol type="1">
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<li>When you develop in C-based languages, the prototypes for the 64-bit APIs
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are normally hidden. To use the <strong>lstat64()</strong> API and the <samp>
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struct stat64</samp> data type, you must compile the source with the
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_LARGE_FILE_API defined.<br>
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<br>
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</li>
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<li>All of the usage notes for <strong>lstat()</strong> apply to <strong>
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lstat64()</strong>. See <a href="lstat.htm#HDRLSTAUSG">Usage Notes</a> in the
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<strong>lstat()</strong> API.</li>
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</ol>
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<br>
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<h3>Example</h3>
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<p>See <a href="../apiref/aboutapis.htm#codedisclaimer">Code disclaimer information</a>
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for information pertaining to code examples.</p>
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<p>The following example provides status information for a file.</p>
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<pre>
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#define _LARGE_FILE_API
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <time.h>
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#include <stdio.h>
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main() {
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char fn[]="temp.file", ln[]="temp.link";
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struct stat64 info;
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int file_descriptor;
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if ((file_descriptor = creat64(fn, S_IWUSR)) < 0)
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perror("creat64() error");
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else {
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close(file_descriptor);
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if (link(fn, ln) != 0)
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perror("link() error");
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else {
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if (lstat64(ln, &info) != 0)
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perror("lstat64() error");
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else {
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puts("lstat64() returned:");
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printf(" inode: %d\n", (int) info.st_ino);
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printf(" dev id: %d\n", (int) info.st_dev);
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printf(" mode: %08x\n", info.st_mode);
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printf(" links: %d\n", info.st_nlink);
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printf(" uid: %d\n", (int) info.st_uid);
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printf(" gid: %d\n", (int) info.st_gid);
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printf(" size: %lld\n", (long long) info.st_size);
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}
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unlink(ln);
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}
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unlink(fn);
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}
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}
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</pre>
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<p><strong>Output:</strong></p>
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<pre>
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lstat() returned:
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inode: 3022
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dev id: 1
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mode: 00008080
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links: 2
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uid: 137
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gid: 500
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size: 18
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</pre>
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<hr>
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API introduced: V4R4
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<hr>
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<center>
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<table cellpadding="2" cellspacing="2">
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<tr align="center">
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<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> | <a href=
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"unix.htm">UNIX-Type APIs</a> | <a href="aplist.htm">APIs by category</a></td>
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</tr>
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</table>
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</center>
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</body>
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</html>
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